campbell



(No Model.)

H. A. CAMPBELL. STEAM CONDENSER.

No. 277,457. Patented May 15,1883.

INVENT QR,

AT TE S T: 6

m a zw u. PETERS. Pbolo-Lithcgmphor, W:1I ing1nm vi a UNITED STATESPATENT QFFIGE.

HENRY A. CAMPBELL, OF METUOHEN, NEW JERSEY.

STEAM-CONDENSER.

SPECIFICATION forming part of Letters Patent No. 277,457, dated May 15,1883.

Application filed December 26, 1882. (No model.)

To all whom it may concern:

Be it known that I, HENRY ALEXANDER CAMPBELL, of Metuchen, in the countyof Middlesex and State of New Jersey, have invented a certain new anduseful Improvement in Steam-Condensers, of which the following is aspecification.

The object of my invention is to facilitate the condensation of steam inany steam-condensing apparatus, and especially in the exhaust-heads ofexhaust steam-pipes; and I accomplish this by providing acondensingchamber with an opening for the admission of air, so placedthat'the steam, when entering such chamber, will draw cold air in withit, which air, mingling with the steam, cools it off, and also cools thecondensingsurfaces, whereby the condensation is greatly increased. Ifurther provide the exhaust-head with facilities for carrying off thewater of condensation and preventing the escape of the same through theair-in1et from the surfaces adjoining the same.

My invention is illustrated in the annexed drawing, which is a sectionalview of an eX-,

. haust-head embodying said invention.

A is the exhaust-steam pipe, and B a chamber surrounding suchexhaust-pipe, and supported therefrom by braces on a. The chamber B isopen at top and bottom and supports at its upper end, by means of bracesb b, a cone, 0, for dividing the volume of steam.

A hood, D, is supported by'b'racesc c from chamber B, and the whole issurrounded by a jacket, E, supported by braces d d and open at the topF. This jacket is connected with the cylinder B at its lowerend,tormingaclosed chamber. I

The arrows eindicate the course of the steam, and the arrows c that ofthe air.

The steam enters the chamber B from the exhaust-pipe with such force asto draw in air at the bottom of said chamber through the opening Baround the exhaust'pipe, as shown by the arrows, and such air mingleswith the steam in the chamber. The mingled air and steam pass fromchamber B, being divided by the cone 0 down through hood D into jacketE, and pass out at the top F of the jacket. The steam being cooled bythe cold air mixed with it, and the metal surfaces of the variouschambers and passages being also cooled by contact with such air, thecondensation of steam ismuch more rapid and complete than in theexhaust-heads heretofore in use, thus diminishing the back-pressure onthe engine, increasing the water of condensation returned to the boiler,and resulting in increased economy of steam. The water produced bycondensation within the hood 1) and jacket E runs down into the bottomof the latter and into pipe G, by which it is conveyed to the boiler orpump. The moisture which accumulates in the chamber B drops into thebottom of said chamber and is conveyed by pipe 11 into the jacket E.Inclined flangesf andf" are secured upon the exhaust-pipeA and chamberB, so that all the water will be readily conveyed to said pipes.

I do not, of course, limit myself to the particular form of exhaust-headdescribed, as the principle of my invention can be applied to anyefficient apparatus of the kind, and also to any other form of apparatuswhere it is desired to facilitate the condensation of steam in whateverlocation the condenser may be used.

WVhat I claim is 1. The combination, with a steam-condensing chamber andthe pipe for admitting steam thereto, of an air-opening in said chambersur- So rounding said pipe, whereby the admission of steam causes thedrawing in of air, substantially as set forth.

2. In an exhaust-head,the combination,witl1 the exhaust-pipe, of achamber surrounding the top of the same, and provided with an airopeningat its bottom, substantially as set forth.

3. In an exhausthead, the combination,with the exhaust-pipe and thechamber surroundgo ing the top of the same, and having an air-inlet, ofthe flanges f f in such air-passage, substantially as and for thepurpose set forth.

This specification signed and witnessed this 19th day of December, 1882.1

HENRY ALEXANDER CAMPBELL.

Witnesses:

H. W. SEELY,

EDWARD H. PYATT.

